Unscheduled weekend statements from the Federal Reserve are, to put it mildly, not generally a good sign.
In the past couple of decades, they have been rare, and have come only in response to dire emergencies: the collapse of Bear Stearns and then of Lehman Brothers in 2008, the COVID-19 pandemic of 2020 and the failure of several US regional banks in 2023.
Source: https://www.afr.com/world/north-america/and-the-next-fed-chairman-is-donald-trump-20260113-p5ntjj